What is an atoll in the Pacific Ocean? Meaning of the word atoll. Tubbataha Reef, Philippines

m. coral island with an open ring; an annular, lagoon ridge, an island, gradually carved out by the smallest skull-dwellers, with a lake or lagoon in the middle (the lagoon can be converted into a Russian lagoon)

Explanatory Dictionary of the Living Great Russian Language, Dal Vladimir

atoll

Explanatory dictionary of the Russian language. D.N. Ushakov

atoll

atoll, m. (Malay). Ring-shaped coral island.

Explanatory dictionary of the Russian language. S.I.Ozhegov, N.Yu.Shvedova.

atoll

A, m. Coral island is ring-shaped.

adj. atoll, -aya, -oe.

New explanatory dictionary of the Russian language, T. F. Efremova.

atoll

m. Coral island, shaped like a ring (sometimes broken).

Encyclopedic Dictionary, 1998

atoll

a coral structure in the form of a continuous or broken ring surrounding a shallow lagoon. The base for an atoll is usually the top of an underwater volcano. Distributed in tropical latitudes of the Pacific and Indian oceans.

Atoll

(from Maldivian atolu), a coral island in the shape of a continuous or broken ring surrounding a lagoon of shallow depth (up to 100 m). Formed mainly by calcareous structures of colonial corals. A. are usually small, but sometimes reach 50 km or more in diameter. Found in the open sea in tropical latitudes; especially often in the central part of the Pacific Ocean, sometimes in entire archipelagos. The origin of A., according to Charles Darwin's hypothesis, is explained by the slow sinking of the island, initially surrounded by a barrier reef, which is gradually built up by corals.

Wikipedia

Atoll

Atoll- a coral island that looks like a continuous or broken ring surrounding a lagoon. More precisely, the atoll is a rise on the ocean floor, crowned with a coral superstructure, forming a reef with a group of islands separated by straits. These straits connect the ocean to the lagoon. If there are no straits, then the land forms a continuous ring, in which case the water in the lagoon may be less salty than in the ocean. The rise on the ocean floor is usually cone-shaped, formed by an extinct volcano.

Atholl (Scotland)

Blair in Atholl In 1264, Atholl came into the possession of the Strathbogie family, whose representatives supported the British during the wars of Scottish independence, which led to the confiscation of the county of Atholl by King Robert Bruce in 1320. Then the county changed owners several times, at one time it was part of the possessions Queen Mary of Geldernskaya, and as a result was assigned to the Stuart family. The most significant representatives of the Earls of Atholl were: Walter Stewart, the organizer of the assassination of King James I, John Stewart, 1st Earl of Atholl, leader of the rebellions against James III, and John Stewart, 4th Earl of Atholl, one of the leaders of the Conservative baronial party in the middle of the 16th century. century. Since 1629, the title of Earl (and since 1703 Duke) of Atholl belongs to the noble Murray family.

Atoll (disambiguation)

Atoll

An atoll is a coral island that looks like a continuous or discontinuous ring surrounding a lagoon.
The Atholl is a historical region in central Scotland, in the mountains north of Perthshire.

Examples of the use of the word atoll in literature.

Holding the flowers in his outstretched hand so as not to fall into a diabetic coma from the cloying smell, he walks around the dance floor surrounded by atoll round tables with white tablecloths, candles and crystal ashtrays.

The first of these plan points led to the Battle of the Coral Sea, the second to the Battle of atoll Midway and the third - to a protracted and bitter struggle for Guadalcanal, a large island near Tulagi.

The Japanese hoped that before the end of the landing in the area atoll There will be no midway for American ships, because as soon as reports of air strikes on the Aleutian Islands arrive, the US Pacific Fleet will rush north.

American planes with atoll Midway was being bombed by Japanese aircraft carriers, and Nagumo found it necessary to suppress the island's airfields.

In just one battle atoll At Midway they lost four heavy aircraft carriers, approximately 330 aircraft and a heavy cruiser, while American losses amounted to only one aircraft carrier and about 150 aircraft.

Thus, we can rightfully say that the battle at atoll Midway was the turning point that predetermined the final defeat of Japan.

Although the outcome of the battle atoll While Midway seriously hampered the Japanese advance in the southeastern Pacific, they were not stopped completely.

After the battle at atoll Midway in early June, the Allied position was significantly strengthened, since many Australian units had by this time returned home and new divisions were being formed, and the United States stationed two divisions and eight air groups in Australia.

In planning operations on this island, General MacArthur and Admiral Nimitz sought to exploit the victory at atoll Midway, in order to quickly move from defense to counteroffensive in the Pacific.

Most of them could be sent directly to new airfields in Assam and Bengal, since after the naval battles in the Coral Sea and off atoll Midway, the possibility of a Japanese invasion of India by sea became unlikely.

In the battle for atoll Midway and the island of Guadalcanal in the group of Solomon Islands, which are the approaches to Australia, Japan suffered a major defeat. Note.

The possibility of effective action on the part of Japan was excluded due to the loss of four heavy aircraft carriers off atoll Midway, two battleships and many small ships and vessels off the island of Guadalcanal, as well as due to the large losses of aircraft in these important battles.

Honolulu, Oahu and some other islands and atolls, over which coconut palms sway.

During the two months of my stay atoll Oolong I've never seen him sober.

And again I am mentally transported to the small fishing town, the port of Yaizu, Shizuoka Prefecture, where I visited with thousands of Japanese at a meeting with the victims of the explosion of the American hydrogen bomb on atoll Bikini.

There are a huge number of islands in the world, some of them appeared tectonically, that is, due to movements of the earth's crust. Others broke away from continents. Finally, there are those for whose origin living organisms are responsible. The article will tell you what atolls are, how they appeared, and what their features are.

Etymology

The noun "atoll" comes from the Maldivian word "atolhu", which in turn comes from the root atollon, which in the native language means "closed, closed". This information alone is enough to suggest that the word “atoll” means something closed.

Meaning

By consulting any dictionary, you can find out the meaning of a term. What is an atoll? This is an island created by corals, in the shape of a ring (usually closed, although an interrupted version is also acceptable), located in the lagoon. It should also be noted that this is a certain elevation in the ocean, on which, thanks to coral organisms, a kind of land arose. Since such an elevation is located on the ocean floor most often on the crater of a dormant volcano, its corresponding shape is cone-shaped.

Considering what an atoll is, we note that it refers to biogenic islands, that is, created by living organisms.

Structure

The structure of such an island is of particular interest. It has 3 parts:

Outer slope of the reef. Most of the time he's pretty cool. It is here that two opposing processes occur - the formation of coral material and its destruction under the influence of waves.
Platform. It is a platform whose width can reach several hundred meters and even kilometers.
Lagoon (water area inside the atoll). As a rule, it has a shallow depth and a flat bottom.

The average height of the atoll is usually 3-4 meters, the sizes can be very different. Thus, Kwajalein, the largest of the atolls, exceeds 2,300 km, more than 90% of which is in the lagoon, which stretches for 300 km.

In the following video you can see the amazing beauty of the atoll and learn some interesting facts about it.

Briefly about education

When considering what an atoll is, it is important to pay special attention to how this island was formed. Most often, the process looked like this: a coral reef gradually appeared around the crater of an extinct volcano, forming a ring. When the water level dropped slightly, such an “island” appeared on the surface. This is how the atoll turned out. There are a lot of similar formations in the Pacific and Indian oceans, in tropical and subtropical latitudes.

The reverse process is also possible - immersion of the atoll in water. In this case, a so-called bank, or submerged atoll, is formed.

The main material from which such unusual islands are created is limestone, accumulated from the skeletons of dead plants and animals, primarily corals. The surface of such islands, as a rule, is decorated with a rather poor vegetation cover, including several species of trees and grasses, located zonally. The most common species are Scaevolla fruticosa, Roofing pandanus, Ochrosia and others. Closer to the center, away from the shore, you can find ficus, hibiscus, as well as artificially planted breadfruit trees and coconut palms.

Other atolls are swampy, and plants other than sedge cannot survive on them.

So, considering the meaning of the word “atoll”, it should be noted that this is an oceanic island created from limestone - the remains of dead living organisms, primarily corals, having a lagoon and covered with some types of vegetation. Because of their picturesque and unusual nature, such islands are very attractive to tourists.

Let's continue our acquaintance with the atolls. We have already looked at what this word means, but now it is necessary to distinguish the term from a group of similar ones, first of all, a volcanic island and a coral reef.

So, an island of volcanic origin is a piece of land located on the crater of an extinct volcano; it has nothing to do with the life of corals and other organisms. A coral reef is a deposit of dead coral found underwater on a volcanic crater.

If the water level decreases and sediments partially appear on the surface, an atoll is obtained.

The sequence can be represented like this:

Corals settled on the crater of an extinct volcano, and gradually a kind of underwater organic skeleton was formed from their remains. This is a coral reef.
When it was partially above the water column, it became an atoll.

Therefore, these terms are not synonymous, although they are close in meaning. We can say that an atoll is a certain type of coral reef, which has a round shape with a lagoon located in the central part, on which several tiny islands can be located.

In the photo you can see that the ocean waters surrounding the atolls have a striking turquoise color. It is connected with the fact that the interior of the island is gradually dying and decomposing.

We looked at what an atoll is, how it differs from similar terms and what it consists of.

Etymology

Meaning

By consulting any dictionary, you can find out the meaning of a term. What is an atoll? This is an island created by corals, in the shape of a ring (usually closed, although an interrupted version is also acceptable), located in the lagoon. It should also be noted that this is a certain elevation in the ocean, on which, thanks to coral organisms, a kind of land arose. Since such an elevation is located on the ocean floor, most often on the crater of a dormant volcano, its corresponding shape is cone-shaped.

Considering what an atoll is, we note that it refers to biogenic islands, that is, created by living organisms.

Structure

The structure of such an island is of particular interest. It has 3 parts:

Outer slope of the reef. Most of the time he's pretty cool. It is here that two opposing processes occur - the formation of coral material and its destruction under the influence of waves.
Platform. It is a platform whose width can reach several hundred meters and even kilometers.
Lagoon (water area inside the atoll). As a rule, it has a shallow depth and a flat bottom.

In the following video you can see the amazing beauty of the atoll and learn some interesting facts about it.

Briefly about education

The reverse process is also possible - immersion of the atoll in water. In this case, a so-called bank, or submerged atoll, is formed.

The main material from which such unusual islands are created is limestone, accumulated from the skeletons of dead plants and animals, primarily corals. The surface of such islands, as a rule, is decorated with a rather poor vegetation cover, including several species of trees and grasses, located zonally. The most common species are scaevolla bush, pandanus roofing, ochrosia and others. Closer to the center, away from the coast, you can find ficus, hibiscus, as well as artificially planted breadfruit trees and coconut palms.

Other atolls are swampy, and plants other than sedge cannot survive on them.

If the water level decreases and sediments partially appear on the surface, an atoll is obtained.

The sequence can be represented like this:

Corals settled on the crater of an extinct volcano, and gradually a kind of underwater organic skeleton was formed from their remains. This is a coral reef.
When it was partially above the water column, it became an atoll.

We looked at what an atoll is, how it differs from similar terms and what it consists of.

atoll-coral structure in the form of a continuous or broken ring bordering a water basin - a lagoon. The ring of the atoll is formed by separate islands. Some of them have their own lagoon or are an incomplete ring that opens towards the main lagoon with a wide channel. Found only in the tropical zone. They can have different sizes, usually small, but some reach 50 km across. The underwater base of the atoll is usually the heights of the ocean floor of volcanic origin. The genesis of the atoll, according to Charles Darwin's hypothesis, is associated with the slow sinking of a tropical island surrounded by a ring of barrier coral reef, which is gradually expanded by the construction of colonial corals. According to another concept, the formation of atolls occurs as a result of a rise in the level of the World Ocean as a result of the melting of cover glaciers, and not the subsidence of the bottom, as evidenced, in his opinion, by the same depths from which coral structures begin in different atolls. They are very demanding on the complex of natural conditions: the temperature of air and water, the constancy of salinity and dynamics of ocean waters, their purity, etc. They are found mainly in the waters of the Pacific and Indian oceans.
Plan and vertical section of the atoll (along line AB)

View value Atoll in other dictionaries

Atoll- m. coral island with an open ring; an annular, lagoon ridge, an island, gradually carved out by the smallest skull-dwellers, with a lake or lagoon in the middle (lagoon........
Dahl's Explanatory Dictionary

Atoll- atoll, m. (Malay). Ring-shaped coral island.
Ushakov's Explanatory Dictionary

Atoll M.— 1. A coral island shaped like a ring (sometimes broken).
Explanatory Dictionary by Efremova

Atoll- -A; m. [English] atoll]. A ring-shaped coral island with a shallow lagoon inside (mainly in the Indian and Pacific oceans).
Kuznetsov's Explanatory Dictionary

Atoll- , a ring-shaped CORAL REEF surrounding a shallow LAGOON. The reef appears initially as the frame of an island slowly sinking into the water, usually volcanic........
Scientific and technical encyclopedic dictionary

Atoll- a coral structure in the form of a continuous or broken ring surrounding a shallow lagoon. The base for an atoll is usually the top of an underwater volcano.........
Large encyclopedic dictionary

The Maldives is a unique creation of nature and an amazing tourist attraction. Located in the Indian Ocean near India, the state is a Muslim republic. At the same time, respect for tourists is so strong that the main Christian holidays are given due attention. The Republic of Maldives consists of several atolls, which in turn include numerous islands. Only 10 groups of atolls out of 20 are open to tourists. Moreover, almost every hotel in the Maldives occupies a separate island, which gives tourists a feeling of peace and serenity. However, there is also something to do for lovers of active recreation - the islands have a lot of opportunities for this, including diving, for which this island state is visited by divers from all over the world. Despite all the exoticism, holidays in the Maldives are distinguished by the highest level of service.

The material on Turister.ru will talk about the structure of the Maldives - atolls and islands with their description and detailed information. You can also study detailed atoll maps : , , And .

Kaafu Atoll (North Male)

Kaafu Atoll (South Male)

The atoll is divided from North Male by the Vadhoo Strait and extends from west to east for 19 km and from north to south for 36 km. Only three islands of the pearl chain are occupied by local aborigines; the remaining 19 paradise corners have been turned into resorts and delight travelers from all over the world with gentle lagoons and marvelous beaches.

South Male is possible.

Vaavu Atoll

Alternative title: Felidhu

Located 65 km from the capital of the Maldives - Male (90 minutes by speedboat or 5 hours by regular boat). The atoll is an interesting geographical phenomenon, as it consists of two atolls: the main Vavu and a round one, 9 kilometers in diameter, located next to the main atoll. The five inhabited islands, with a population of approximately 2,300 people, make Vaavu Atoll the smallest administratively in the Maldives. Besides these five, there are about 14 other islands, but most of them are almost unexplored by tourists compared to the islands of other atolls. Vaavu Atoll is considered one of the best diving spots in the Maldives.

The Fotteyo Candu dive site is considered the best in the country and one of the top five in the world. Vaavu Atoll was opened to tourists in 1975, and has become a favorite among many organizers of various cruises and safaris in the Maldives. The reefs on the eastern side of the atoll are in pristine condition and are perfect for lovers of not only diving, but also snorkeling. There are a lot of sharks here, and there is a chance to see hammerhead fish and other equally interesting fish.

View a detailed map of the atoll and read about tourist islands Vaavu can.

Meemu Atoll

Alternative title: Mulaku

The atoll stretches 50 kilometers from north to south and 30 kilometers in width, housing eight fishing islands and two resort islands. There are excellent places for relaxation and diving here, as confirmed by numerous cruises.

View a detailed map of the atoll and read about tourist islands I guess it's possible.

Seenu Atoll

Alternative title: Addu

The southernmost atoll is located right at the equator, stretching 15 km from north to south and 18 km from west to east. It consists of 5 islands: northern Midu and western Hithadhoo, Gan, Feydhoo and Maradu, united by bridges. There is an airport and a resort hotel on the island of Gan, and the large Hithadhoo ranks 2nd in population after Male - 12,000 inhabitants. Green and pretty Feidu and Maradu rustle with coconut palm plantations; nature has endowed them with small coves where fishing villages have settled. A pleasant surprise awaits hotel guests in Ghana - at any time they will be able to visit the nearby islands and get acquainted with the life of the local aborigines.

View a detailed map of the atoll and read about tourist islands Seen is possible.

Faafu Atoll

Alternative title: Nilandhe North (Nilandhe Atholhu Uthuruburi)

A small atoll, has an oval shape and the second name is North Nilande. It stretches 21 km from west to east and 45 km from north to south, containing five fishing islands and only one resort island, which was recently opened to travelers.

View a detailed map of the atoll and read about tourist islands Faaf is allowed.

Dhaalu Atoll

Alternative title: Nilandhe South (Nilandhe Atholhu Dhekunuburi)

Dhaalu Atoll is located 150 km north of Male and 5 km from Faafu Atoll. It is also known as Nilandhe Atholhu Dhekunuburi (South Niladhe Atoll). It is separated from North Nilade (Faafu Atoll) by the Deburiiterey Kandu Strait. The airport and other atolls can be reached by seaplane or speedboat.

Dhaalu Atoll, 38 km long and 23 km wide, has about 46 islands, many of which are uninhabited. The seaplane transfer takes 40 minutes. Dhaalu Atoll was recently opened for tourism. The islands, open to tourists, are located in the northern part of the atoll and provide excellent diving opportunities. The main island is Kudahuvadhoo Island. This is a fairly large island with developed infrastructure and a population of 1,500 people.

The main reefs, interesting and accessible for diving, are located along the northern and northeastern parts of the islands. There are practically no shallow reefs inside the atoll.

The lagoon, which is relatively clear of coral thickets, allows you to safely go on a tour of the islands by boat. Dhaalu Atoll still preserves the ruins of ancient monasteries and mosques. On the islands where the indigenous population lives, souvenirs are much cheaper than in the capital.

View a detailed map of the atoll and read about tourist islands Dhaal is possible.

Alif Atoll

Alternative title: Ari, also the northern and southern parts are called Alif Alif and Alif Dhaal

The atoll stretches for 33 km from west to east and 96 km from north to south. The atoll is divided into two honors: Alif Alif (northern) and Alif Daal (southern). In the northern part, in addition to the main atoll, there is a small atoll called Radsu, and in the southern part is the capital Mahibadhu. The atoll includes 70 islands, but only 18 of them are inhabited, and 25 have been turned into resorts. Once upon a time, local aborigines hunted for sharks and turtles, but since sea hunting is banned, they are busy servicing tourist hotels.

Baa Atoll

Alternative title: Maalhosmadulu Dhekunuburi

It is an administrative division of the Republic of Maldives, together with Horseborough Atoll, with its capital being Eidafushi. The atoll stretches 32 km from west to east and 42 km from north to south and includes 10 inhabited islands. Local aborigines make a living by fishing, while at the same time mastering more profitable tourism professions. The underwater world is amazingly diverse and surprises with interesting dive sites. Marvelous corals, still untouched by divers, as well as dozens of species of fish await ocean treasure hunters!

Lhaviyani Atoll

Alternative title: Miladhunmadulu Uthuruburi

The atoll is 120 km away from the Maldivian capital, and therefore travelers fly to relax by seaplane. The atoll stretches for 35 km from north to south and 37 km from west to east. Food and goods are brought here by dhoni, which takes 8 hours to travel such a considerable distance. Fadiffolu contains 6 fishing and 4 resort islands.

View a detailed map of the atoll and read about tourist islands Lhaviyani is possible.

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